Ligand binding reaction phenomena

However, in one important respeet, the podands are undoubtedly superior to the eyelie analogues, which is the kinetics of complexation and deeomplexation of cations.In fact, it is a general phenomenon that the more rigidly preorganized a host is for cation binding, the slower the kinetics of the proeess are. The same is true for deeomposition of the complex. Thus, both the forward (ki) and reverse complexation rates ( k 1) of the podands are high, while the rates for the forward and back reactions of the macrocycles are slower, in practice, 10 -10 times slower than with open-chain ligands. The complex... 

SOMC is purely a surface phenomenon where an organometallic complex binds selectively with the surface by covalent (or sometimes ionic or both) bonds. One can then access to its electronic configuration and oxidation state, and this leads to a better understanding of the reaction mechanism. In SOMC, the surface acts as a ligand, which means one can tune the catalytic activity of the organometallic with the surface... 

A phenomenon, which was studied in the literature, is the role of extra water in ionic liquids. This phenomenon is complex and depends on the supramolecular structure of the ionic liquid. It is assumed that its structure and chemical reactivity is far from that of bulk water, as it is tightly bound and activated in the H-bonding system of the IL. As a result, reactions with water take place quite rapidly in these systems. On the other hand, water cannot function as a solvating ligand here since it is too involved in IL binding. This was deduced, for instance, from the absence of so-called solvent pores and represents a quite singular situation for colloid chemistry and material synthesis. 

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